Visit the clickheat folder in your browser, as in mysite.com/clickheat

Follow the configuration instructions. It should then take you to the ClickHeat page which is displaying a little bit of the top of your homepage, with a link about adding javascript. Click the link.

Fill out your preferences to create the javascript

Copy the resulting javascript and paste it into the bottom of your theme's page.tpl.php page, right above the body tag

Now, you'll want to make it so that it will automatically know when it's on a separate page. The way to do this is to grab the $variables['title'] variable and make it your ClickHeat Group. On my page, I use the following code: